CN104047577A - Linear motor direct-driven pumping unit - Google Patents
Linear motor direct-driven pumping unit Download PDFInfo
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- CN104047577A CN104047577A CN201410229797.2A CN201410229797A CN104047577A CN 104047577 A CN104047577 A CN 104047577A CN 201410229797 A CN201410229797 A CN 201410229797A CN 104047577 A CN104047577 A CN 104047577A
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- linear motor
- pumping unit
- motor rotor
- linear
- electric motors
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Abstract
A linear motor direct-driven pumping unit belongs to the field of extraction equipment of petroleum, natural gas and coalbed methane. The linear motor direct-driven pumping unit comprises a rack (2) and a linear motor driving device arranged on the rack (2); a linear motor rotor (5) is provided with a pumping rod connector; the pumping unit is directly driven by adopting a linear motor and is matched with a multiage spring energy accumulator, middle transmission, mechanical reversing loops, elastic members and counter weights in the transmission pumping unit are omitted, the suspension point precision is improved, and the structure of the whole unit is simple; the stroke and stroke time are convenient to adjust, the transplantation is good, the modularized design of the whole unit is convenient to realize, the energy conversion and utilization rate is higher, and the reliability, service life and efficiency of the whole unit are greatly improved.
Description
Technical field
The invention belongs to oil, natural gas, coal bed gas extracting device field, be specially the linear electric motors direct drive pumping unit that uses single-stage and multistage flexible springs accumulator.
Background technology
Oil pumper is the visual plant of oil, natural gas, coal-bed gas exploitation, requires it under various natural environment and climate conditions, to move by long-term efficient stable.At present conventional oil pumper has two types, can be divided into beam pumping unit and without beam pumping unit.Beam pumping unit is main force's type of current application, but it exists that speed degree of irregularity is large, detent torque is large, counterbalance effect is poor, stroke and jig frequency is difficult to regulate, intermediate link is many, the low inferior problem of system effectiveness.For these problems, around energy-efficient theme, there is blue elephant types such as chain type oil pump, vertical rotary cylinder oil pumper, belt oil pumping machine, linear motor oil pumping machine, though applied to a certain extent, but do not tackle the problem at its root, effect is not good enough; Existing linear motor oil pumping machine wherein, its mover is still walked around the i.e. day wheel drive sucker rod of pulley by wire rope, and adopt the mode of balance counterweigh, complex structure, machine life is shorter than beam pumping unit, efficiency is lower and safety is poor, fails fundamentally to bring into play the potentiality that linear electric motors drive.
Summary of the invention
For solve existing linear motor oil pumping machine because wire rope walks around that the maintenance cycle that day wheel drive sucker rod causes is short, efficiency is lower, complex structure and the technical problem such as safety is poor, the invention provides a kind of linear electric motors direct drive pumping unit, comprise frame 2 and be arranged on the linear motor driver in frame 2, it is characterized in that: linear motor rotor 5 arranges sucker rod connector 12.
Described linear motor driver, comprise linear motor stator electric, linear motor rotor, be arranged on slide block or roller on linear motor rotor, linear motor stator electric lays fixing along the front of frame, linear motor rotor and linear motor stator electric surface is parallel and keep fixedly air gap, makes linear motor rotor and the linear motor stator electric can contactless relative motion; The locating guide device of linear motor rotor is completed by slide block and line slideway or wheel track mode, and slide block moves along line slideway, or roller moves along rectilinear orbit, guarantees the motion air gap between linear motor rotor and linear motor stator electric.
Between described frame and the mover of linear electric motors, check mechanism is set.
Described check mechanism, for two sides of frame vertically respectively arrange a braking rail, as the braking rail of brake, brake and linear motor rotor are fixed.
The top of described frame arranges limit switch.
Described linear motor rotor arranges sucker rod connector, and it is upper that linear motor rotor is fixed on mover installing plate 5a, and mover installing plate 5a and mover pedestal 3 are fixing, on mover pedestal 3, sucker rod connector are set; Described brake and 3 fixed installations of linear motor rotor pedestal, braking rail and frame base 1 fixed installation, or braking rail and 3 fixed installations of mover pedestal, brake and frame base 1 fixed installation.
The mover of described linear electric motors is articulated and connected by mover pedestal 3 and multistage spring energy storage device 4.
Described multistage spring energy storage device, for the bottom of multistage spring energy storage device 4 is arranged in frame base 1 or is arranged on frame top, the top of multistage spring energy storage device is fixedly connected with mover basis.
Described multistage spring energy storage device is multiple coil spring energy storage device, by fixed muffle 4a, classification telescopic sleeve 4b, spring 4c, and guide-localization section 4d forms, fixed muffle 4a is fixed on pedestal, and the classification telescopic sleeve 4b that is positioned at top is connected with the bottom of platform, the inner all mounting spring 4c of fixed muffle 4a, classification telescopic sleeve 4b.Or, at the outer cylinder mounting spring 4c of classification telescopic sleeve 4b.For improving the multistage flexible springs accumulator life-span, guide section can arrange sliding bearing, and can adopt oil, grease lubrication.
Described multistage spring energy storage device 4 is multistage gas spring accumulator, by multi-level piston, and fixed connecting piece, air chamber forms; Pistons at different levels are connected with fixed connecting piece at different levels, and pistons at different levels can move in air chamber at different levels, utilize the compression of gas and release to realize energy storage.It is identical with above-mentioned multi-stage mechanical spring energy storage device with the connected mode of frame base and mover pedestal.
Thereby the present invention has cancelled original oil pumper to be connected, adopts the mode of direct balance to cancel the existing reversing arrangement head sheave without beam pumping unit as the elastic components such as hair plait, wire rope, belt or oar part, further improved the efficiency of oil pumper, reduce height and the weight of oil pumper, improved life-span, the reliability and safety of oil pumper.
This oil pumper adopts linear motor direct drive, coordinates spring energy storage device, has cancelled intermediate transmission and mechanical commutation link, bullet/oar part and the counterweight of traditional oil pumper, improved suspension point precision, reduced complete machine weight, complete machine structure is simple, and reliability, life-span and overall efficiency significantly promote; Meanwhile, by increasing the progression of linear electric motors and multi-stage expansion spring energy storage device, larger stroke and the lifting force of convenient realization; Stroke, jig frequency are easy to adjust, and transplantability is good, is convenient to realize complete machine modularized design, manufacture, installation, debugging etc.In addition, can pass through the pretension to multi-stage expansion spring energy storage device, increase the energy that spring stores, reduce the power without linear electric motors under counterweight operating mode.With tradition band pump with balanced weight with without counterweight linear motor oil pumping machine, compare, linear electric motors direct drive pumping unit with multistage flexible springs accumulator of the present invention also has a remarkable advantage: the serious impact and the danger that without steel rope belt fracture, mover accidental falling, bring, safety significantly improves, and Conversion of Energy utilization rate is higher.
Compare with the single-stage spring energy storage device linear electric motors direct drive pumping unit that the present invention adopts, the multistage spring energy storage device linear electric motors direct drive pumping unit tool that the present invention adopts has the following advantages:
1, under the condition of same distortion, reduced the overall height of spring energy storage device, reduced the central diameter (physical dimension) of spring;
While 2, designing, be convenient to the rigidity of control spring, same camber of spring, restoring force (bearing capacity) is larger;
3, be easy to adopt different-stiffness, different length, the multistage spring of different central diameter to form any multistage spring energy storage device, stroke is easy to adjust, and oil pumper dynamic property is easier to control;
4, be convenient to realize complete machine modularized design, reduced manufacturing cost.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention perspective view;
Fig. 2 is the elevation of the embodiment of the present invention;
Fig. 3 is the lateral view of the embodiment of the present invention;
Fig. 4 is the top view of the embodiment of the present invention;
The multi-stage expansion spring energy storage device structural representation that Fig. 5 (a) is the embodiment of the present invention;
The one-level coil tension spring accumulator perspective view that Fig. 5 (b) is the embodiment of the present invention;
Fig. 5 (c) is the sectional view of Fig. 5 (b);
Fig. 6 is embodiment of the present invention structural representation;
Fig. 7 is embodiment of the present invention structural representation;
Fig. 8 is embodiment of the present invention structural representation;
Fig. 9 is embodiment of the present invention structural representation;
Figure 10 (a) is multi-stage expansion gas spring accumulator perspective view;
Figure 10 (b) is the sectional view of Figure 10 (a);
The schematic diagram of the multi-stage expansion spring energy storage device external spring structure that Figure 11 (a) is the embodiment of the present invention;
The sectional view of the multi-stage expansion spring energy storage device external spring structure that Figure 11 (b) is the embodiment of the present invention.
In accompanying drawing: 1. frame base, 2. frame, 3. mover pedestal, 4. multi-stage expansion spring energy storage device, 4a. fixed muffle, 4b. classification telescopic sleeve, 4c. spring, 4d. guide-localization section, 5. linear motor rotor, 5a. mover installing plate, 6. linear motor stator electric, 7. line slideway, 8. slide block, 9. brake, 10. braking rail, 11. limit switches, 12. sucker rod connectors, 13. sucker rods, 14. pistons, 15. fixed connecting pieces, 16. air chambers.
The specific embodiment
Following content is the detailed description of by reference to the accompanying drawings the present invention being done, and should not be understood to be limitation of the invention.
A kind of linear electric motors direct drive pumping unit embodiment 1 of the present invention, as shown in Figure 1, Figure 2, Figure 3, Figure 4, mainly comprise frame base 1, frame 2, mover pedestal 3, multi-stage expansion spring energy storage device 4, linear motor driver, locating guide device, check mechanism, sucker rod connector 12, sucker rod 13.
Frame base 1 fixes on the ground, and frame 2 is vertically arranged in frame base 1, and linear motor stator electric 6 and the line slideway 7 of linear motor driver installed in the front of frame 2.Two sides of frame 2 vertically respectively arrange a braking rail 10, as the braking rail of brake 9.The bottom of multi-stage expansion spring energy storage device 4 is arranged in frame base 1, and the top of multi-stage expansion spring energy storage device 4 is connected with mover pedestal 3.The topmost of frame 2 arranges limit switch 11, for spacing, prevents overshoot.Certainly, multi-stage expansion spring energy storage device 4 also can be replaced by other accumulator of prior art.
For everybody known linear electric motors, General Definition: have a side of armature winding to be called linear electric motor primary, there is a side of magnet or tablet to be called linear electric motors secondary, also definition: motion parts is linear motor rotor, and standing part is linear motor stator electric.The operating principle of linear electric motors is: in linear electric motor primary winding, passes into electric current, produces a travelling-magnetic-field for magnet or tablet motion relatively, and this travelling-magnetic-field and secondary synchronization motion, and then drive linear motor rotor is done rectilinear motion.
Linear motor driver of the present invention is comprised of linear motor stator electric 6, linear motor rotor 5, the slide block 8 that is arranged on linear motor rotor.Linear motor stator electric 6 lays fixing along the front of frame 2; Linear motor rotor 5 is parallel with linear motor stator electric 6 surfaces and keep fixedly air gap, and making can contactless relative motion between linear motor rotor 5 and linear motor stator electric 6.The locating guide device of linear motor rotor 5 is completed by slide block 8 and line slideway 7, and slide block 8 moves along line slideway 7, guarantees the motion air gap between linear motor rotor 5 and linear motor stator electric 6.Described locating guide device can be wheel track guide-localization mode.
A kind of linear electric motors direct drive pumping unit of the present invention, described linear motor driver adopts linear electric motors collateral motion, elementary fixing arrangement, or adopts linear electric motor primary motion, secondary fixing arrangement.Described linear motor driver can adopt flat or cylinder mode pattern.In addition, linear motor driver can be two or more sets linear electric motors, and braking rail 10 is arranged between two or more sets linear motor stator electrics.
The motion parts of a kind of linear electric motors direct drive pumping unit of the present invention is mainly comprised of mover pedestal 3, multi-stage expansion spring energy storage device 4, linear motor rotor 5, caliper brake 9.Linear motor rotor 5 is arranged on mover installing plate 5a.Mover installing plate 5a is connected with mover pedestal 3.Described multi-stage expansion spring energy storage device 4 is single-stage or multilevel hierarchy, as shown in Figure 5, by fixed muffle 4a, classification telescopic sleeve 4b, spring 4c, and guide-localization section 4d formation, fixed muffle 4a is fixed in frame base 1, the classification telescopic sleeve 4b that is positioned at top is connected with the bottom of mover pedestal 3, the inner all mounting spring 4c of fixed muffle 4a, classification telescopic sleeve 4b.Above-mentioned multi-stage expansion spring energy storage device 4 is built-in spring structure, it also can be configured to external spring structure, as shown in figure 11, spring 4c and concentric placement of classification sleeve 4a axis, spring 4c is positioned at the periphery of classification sleeve 4a, and operating principle is identical with the multi-stage expansion spring energy storage device of embedding structure.Brake 9 is fixed on mover pedestal 3, acts on braking rail 10.Sucker rod connector 12 is connected with the bottom of mover pedestal 3, and sucker rod 13 is connected on sucker rod connector 12.
Described spring energy storage device 4 is not limited to mechanical spring, can be also the spring of other kinds such as gas, permanent magnetism.Be multi-stage expansion gas spring accumulator embodiment as shown in figure 10, by multi-level piston 14, fixed connecting piece 15, air chamber 16 forms.Pistons 14 at different levels are connected with fixed connecting piece 15 at different levels, and first order fixed connecting piece 15 is fixed in frame base 1, and pistons 14 at different levels can move in air chamber at different levels 16, utilize the compression of gas and release to realize energy storage.
A kind of linear electric motors direct drive pumping unit of the present invention, provides linear electric motors, the required power supply of mover pedestal 3 by electricity cable, the power rail way of contact or the contactless mode of power rail being fixed in frame 2.
As shown in Figure 6, multi-stage expansion spring energy storage device 4 is arranged in the top of frame 2.All the other are with embodiment 1.
As shown in Figure 6, multi-stage expansion spring energy storage device 4 is symmetrically arranged in the both sides of mover pedestal 3.
As shown in Figure 7, described frame 2, multi-stage expansion spring energy storage device 4, linear motor driver, locating guide device, check mechanism, be arranged symmetrically with.Described sucker rod connector 12 is connected in the bottom of platform 3, and sucker rod 13 is connected with sucker rod connector 12.As shown in Figure 9, sucker rod connector 12 is arranged in the center of multi-stage expansion spring energy storage device 4, and is fixedly connected with the classification telescopic sleeve 4b that is positioned at multi-stage expansion spring energy storage device 4 tops.
The technical scheme of above-described embodiment, preferentially adopts multistage spring energy storage device.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. a linear electric motors direct drive pumping unit, comprises frame (2) and is arranged on the linear motor driver in frame (2), it is characterized in that: linear motor rotor (5) arranges sucker rod connector (12).
2. linear electric motors direct drive pumping unit as claimed in claim 1, it is characterized in that: described linear motor driver, comprise linear motor stator electric (6), linear motor rotor (5), be arranged on the slide block (8) on linear motor rotor, linear motor stator electric (6) lays fixing along the front of frame (2), linear motor rotor (5) and linear motor stator electric (6) surface is parallel and keep fixedly air gap, and making between linear motor rotor (5) and linear motor stator electric (6) can contactless relative motion; The locating guide device of linear motor rotor (5) is completed by slide block (8) and line slideway (7), and slide block (8), along line slideway (7) motion, guarantees the motion air gap between linear motor rotor (5) and linear motor stator electric (6).
3. linear electric motors direct drive pumping unit as claimed in claim 2, is characterized in that: between described frame (2) and linear motor rotor (5), check mechanism is set.
4. linear electric motors direct drive pumping unit as claimed in claim 3, it is characterized in that: described check mechanism, for two sides of frame (2) vertically respectively arrange a braking rail (10), as the braking rail of brake (9), brake (9) is fixing with linear motor rotor (5).
5. linear electric motors direct drive pumping unit as claimed in claim 1, it is characterized in that: described linear motor rotor (5) arranges sucker rod connector (12), linear motor rotor (5) is fixed on mover installing plate (5a), mover installing plate (5a) is fixing with mover pedestal (3), and mover pedestal (3) arranges sucker rod connector (12); Described brake (9) is fixing with linear motor rotor (5), for brake (9) and mover pedestal (3) are fixed, or braking rail and 3 fixed installations of mover pedestal, brake and frame base 1 fixed installation.
6. linear electric motors direct drive pumping unit as claimed in claim 5, is characterized in that: linear motor driver is two groups of linear electric motors, and braking rail (10) is arranged between two groups of linear motor stator electrics.
7. linear electric motors direct drive pumping unit as described in one of claim 1-6, is characterized in that: described linear motor rotor (5) is connected with multistage spring energy storage device.
8. linear electric motors direct drive pumping unit as claimed in claim 7, it is characterized in that: described linear motor rotor (5) is connected with multistage spring energy storage device, the bottom of multistage spring energy storage device (4) is arranged on frame base (1) above or is inverted and is arranged in frame (2) top base, and the top of multistage spring energy storage device (4) and mover pedestal (3) are hinged.
9. linear electric motors direct drive pumping unit as claimed in claim 8, it is characterized in that: described multistage spring energy storage device is multiple coil spring energy storage device, by fixed muffle (4a), classification telescopic sleeve (4b), spring (4c), and guide-localization section (4d) forms, fixed muffle (4a) is fixed in frame base (1), the classification telescopic sleeve (4b) that is positioned at top is connected with the bottom of mover pedestal (3), fixed muffle (4a), the inner all mounting spring (4c) of classification telescopic sleeve (4b), or, at the outer cylinder mounting spring 4c of classification telescopic sleeve 4b.
10. linear electric motors direct drive pumping unit as claimed in claim 8, is characterized in that: described multistage spring energy storage device is multistage gas spring accumulator, by multi-level piston (14), and fixed connecting piece (15), air chamber (16) forms; Pistons at different levels (14) are connected with fixed connecting piece (15) at different levels, first order fixed connecting piece (15) is fixed on frame base (1) above or is inverted and is arranged on mover pedestal (3) above, and pistons at different levels (14) move in air chamber at different levels (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410229797.2A CN104047577A (en) | 2014-05-28 | 2014-05-28 | Linear motor direct-driven pumping unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410229797.2A CN104047577A (en) | 2014-05-28 | 2014-05-28 | Linear motor direct-driven pumping unit |
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| CN104047577A true CN104047577A (en) | 2014-09-17 |
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| CN201410229797.2A Pending CN104047577A (en) | 2014-05-28 | 2014-05-28 | Linear motor direct-driven pumping unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806206A (en) * | 2015-05-15 | 2015-07-29 | 焦作市华鹰机电技术有限公司 | Oil pumping unit driven by cylindrical linear motor |
| CN106801585A (en) * | 2017-01-10 | 2017-06-06 | 中国石油大学(华东) | A kind of floating drilling platform semi-active type crown-block heave compensator |
| CN108880178A (en) * | 2018-07-05 | 2018-11-23 | 宁波修远机电有限公司 | Multistage linear motor and its oil well pump |
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| CN102040141A (en) * | 2009-10-15 | 2011-05-04 | 河南理工大学 | Rope-free lifting machine using lifting force as brake drive force |
| CN204041017U (en) * | 2014-05-28 | 2014-12-24 | 河南理工大学 | A kind of linear motor direct-driven oil pumper |
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2014
- 2014-05-28 CN CN201410229797.2A patent/CN104047577A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5196770A (en) * | 1988-12-12 | 1993-03-23 | Marine And Petroleum Equipment | Vertically reciprocating constant power drive unit for raising a load step by step |
| CN2284867Y (en) * | 1996-07-22 | 1998-06-24 | 孙平 | Linear motor driven beam-pumping unit |
| CN2467821Y (en) * | 2001-02-26 | 2001-12-26 | 周小稀 | Beam-pumping unit driven by linear motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806206A (en) * | 2015-05-15 | 2015-07-29 | 焦作市华鹰机电技术有限公司 | Oil pumping unit driven by cylindrical linear motor |
| CN104806206B (en) * | 2015-05-15 | 2018-01-09 | 焦作市华鹰机电技术有限公司 | A kind of oil pumper of cylindrical linear motor driving |
| CN106801585A (en) * | 2017-01-10 | 2017-06-06 | 中国石油大学(华东) | A kind of floating drilling platform semi-active type crown-block heave compensator |
| CN108880178A (en) * | 2018-07-05 | 2018-11-23 | 宁波修远机电有限公司 | Multistage linear motor and its oil well pump |
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Application publication date: 20140917 |